WO2016183902A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2016183902A1
WO2016183902A1 PCT/CN2015/082273 CN2015082273W WO2016183902A1 WO 2016183902 A1 WO2016183902 A1 WO 2016183902A1 CN 2015082273 W CN2015082273 W CN 2015082273W WO 2016183902 A1 WO2016183902 A1 WO 2016183902A1
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WIPO (PCT)
Prior art keywords
backlight module
led lamp
light guiding
guiding film
liquid crystal
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Ceased
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PCT/CN2015/082273
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English (en)
French (fr)
Inventor
刘中杰
郭庆
张彦学
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a liquid crystal display device.
  • Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc., and is widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptops. Screen, etc.
  • liquid crystal display devices which include a backlight module, a liquid crystal panel coupled to the backlight module, and a front frame for fixing the liquid crystal panel and the backlight module.
  • a liquid crystal display panel consists of a color filter substrate (CF), a thin film transistor substrate (TFT, Thin Film Transistor), a liquid crystal (LC) sandwiched between a color filter substrate and a thin film transistor substrate, and a sealant frame ( Sealant), the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates, and the liquid crystal molecules can be controlled to change direction by energization or not. The set of light is refracted to produce a picture.
  • CF color filter substrate
  • TFT Thin Film Transistor
  • LC liquid crystal sandwiched between a color filter substrate and a thin film transistor substrate
  • Sealant frame Sealant
  • the liquid crystal panel itself does not emit light, and the light source provided by the backlight module is required to display the image normally.
  • the backlight module is divided into a side-in type backlight module and a direct-lit backlight module according to different incident positions of the light source.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is from the light guide surface of the light guide plate (LGP).
  • the light guide plate enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then is supplied to the liquid crystal panel through the optical film group to form a surface light source.
  • a light source such as a cathode fluorescent lamp (CCFL) or a light emitting diode (LED) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
  • CCFL cathode fluorescent lamp
  • LED light emitting diode
  • the thinnest mobile phone on the market is about 6.1mm.
  • the thickness of the liquid crystal display device lies in the thickness of the liquid crystal panel and the thickness of the backlight module.
  • the backlight module has a three-layer diaphragm (upper and lower prism sheets, a diffusion sheet), and the reflection sheet mostly uses a silver reflection sheet and has a low end.
  • the model uses a white reflector.
  • Most of the light guide plates are used with LED models, such as LED3806 with 0.4mm light guide plate. In this way, the thickness of the backlight module is determined by these components, as shown in Figure 1.
  • the liquid crystal display device includes a backlight module 200 and a liquid crystal panel 100 disposed on the backlight module 200, wherein the liquid crystal panel 100 includes a TFT substrate. a lower polarizer 140 disposed under the TFT substrate 130, a CF substrate 120 disposed above the TFT substrate 130, an upper polarizer 110 disposed above the CF substrate 120, and the CF substrate 120. A liquid crystal layer (not shown) is disposed between the TFT substrate 130 and the TFT substrate 130.
  • the backlight module 200 is a side-lit backlight module, and includes a reflective sheet 260.
  • the light guide plate 250 is disposed on the reflective sheet 260.
  • the plastic frame 230 is bonded to the plastic frame 300 by the double-sided tape 300.
  • the light guide plate 250 is adhered to the flexible circuit board 220 and the optical film group 210 by the double-sided tape 300; the lower polarizer 140 of the liquid crystal panel 100 is bonded to the lower polarizer 300 by the double-sided tape 300.
  • the optical film set 210 in the backlight module 200 fixes the liquid crystal panel 100 and the backlight module 200 together.
  • the backlight module produced by the latest technology in the backlight industry is only 0.43mm thinner.
  • This kind of backlight module is not only expensive, but also requires high assembly precision, good yield control, and the backlight of 0.43mm.
  • the module continues to be thinner it will encounter the problem that the height of the LED lamp is difficult to match the wedge-shaped opening of the light guide plate.
  • An object of the present invention is to provide a backlight module that replaces a light guide plate used in a conventional backlight module with a light guide film, and eliminates the arrangement of the reflection sheet, thereby making the thickness of the backlight module thin.
  • the backlight module has an accommodating space inside, which can be used for designing the whole structure of the mobile phone or the tablet computer, and is used for placing the original components such as the circuit and the battery, which is beneficial to the thinness of the entire display device.
  • Another object of the present invention is to provide a liquid crystal display device which adopts the above-described backlight module having a special structure, thereby having a thin thickness and a good display effect.
  • the present invention provides a backlight module including a light guiding film, an optical film set disposed above the light guiding film, and disposed under the light guiding film and located at an edge of the light guiding film.
  • the LED lamp, the flexible circuit board electrically connected to the LED lamp, and the plastic frame disposed on the outer side of the light guiding film, the optical film group and the LED lamp;
  • the light emitting surface of the LED lamp is a side of the LED lamp that is in contact with the light guiding film.
  • An accommodating space is formed between the light guiding film and the LED lamp.
  • the number of the LED lamps is one, and is located at an edge position below one side of the light guiding film to realize single-side light input of the backlight module.
  • the number of the LED lamps is two, which are respectively located at the edge positions below the two sides of the light guiding film, and the bilateral light entering the backlight module is realized.
  • the flexible circuit board is disposed under the LED lamp and is fixedly connected thereto.
  • the plastic frame is disposed on the flexible circuit board and located outside the LED lamp, and the LED lamp is fixed on the plastic frame by the double-sided tape.
  • the flexible circuit board is disposed on a side of the LED lamp and is fixedly connected thereto.
  • the plastic frame is disposed on an outer side of the flexible circuit board, and the flexible circuit board is fixed on the plastic frame by a double-sided tape.
  • the double-sided tape is a black and white double-sided tape.
  • the optical film set includes a diffusion film and upper and lower prism sheets.
  • the thickness of the light guiding film ranges from 0.025 mm to 0.2 mm.
  • the present invention further provides a backlight module including a light guiding film, an optical film set disposed above the light guiding film, an LED lamp disposed under the light guiding film and located at an edge of the light guiding film, a flexible circuit board electrically connected to the LED lamp, and a plastic frame disposed on the outer side of the light guiding film, the optical film group, and the LED lamp;
  • the light emitting surface of the LED lamp is a side of the LED lamp that is in contact with the light guiding film;
  • an accommodating space is formed between the light guiding film and the LED lamp
  • the double-sided tape is a black and white double-sided tape
  • the optical film set includes a diffusion film and upper and lower prism sheets.
  • the present invention also provides a liquid crystal display device, comprising the above backlight module, and a liquid crystal panel disposed on the backlight module;
  • the liquid crystal panel includes a TFT substrate, a lower polarizer disposed under the TFT substrate, a CF substrate disposed above the TFT substrate, an upper polarizer disposed above the CF substrate, and the CF a liquid crystal layer between the substrate and the TFT substrate;
  • the lower polarizer in the liquid crystal panel is bonded to the plastic frame in the backlight module by double-sided tape, thereby fixing the liquid crystal panel and the backlight module together.
  • the present invention provides a backlight module and a liquid crystal display device in which the backlight module is mounted.
  • the structure of the backlight module is replaced by a light guide film instead of the light guide plate. And omitting the arrangement of the reflective sheet, so that the backlight module has a thinner thickness, and an accommodating space is formed between the light guiding film of the backlight module and the LED lamp, so that the backlight module is mounted.
  • the accommodating space can be designed according to the whole structure of the mobile phone or the tablet computer, and is used for placing components such as circuits and batteries, thereby making the thickness of the liquid crystal display device thinner. .
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display device
  • FIG. 2 is a schematic structural view of a first embodiment of a backlight module of the present invention
  • FIG. 3 is an enlarged schematic view of an LED lamp and a flexible circuit board in the backlight module shown in FIG. 2;
  • FIG. 4 is a schematic structural view of a second embodiment of a backlight module of the present invention.
  • FIG. 5 is an enlarged schematic view of an LED lamp and a flexible circuit board in the backlight module shown in FIG. 4;
  • FIG. 6 is a schematic structural view of a first embodiment of a liquid crystal display device of the present invention.
  • Fig. 7 is a schematic structural view showing a second embodiment of the liquid crystal display device of the present invention.
  • the present invention firstly provides a backlight module, including a light guiding film 27 , an optical film group 21 disposed above the light guiding film 27 , and disposed under the light guiding film 27 . And an LED lamp 24 located at an edge of the light guiding film 27, a flexible circuit board 22 electrically connected to the LED lamp 24, and a light shielding film 27, an optical film group 21, and an LED lamp 24 disposed outside the LED lamp 24.
  • Plastic frame 23 including a light guiding film 27 , an optical film group 21 disposed above the light guiding film 27 , and disposed under the light guiding film 27 .
  • an LED lamp 24 located at an edge of the light guiding film 27, a flexible circuit board 22 electrically connected to the LED lamp 24, and a light shielding film 27, an optical film group 21, and an LED lamp 24 disposed outside the LED lamp 24.
  • Plastic frame 23 including a light guiding film 27 , an optical film group 21 disposed above the light guiding film 27 , and disposed under the light guiding film 27 .
  • the light emitting surface 241 of the LED lamp 24 is a surface of the LED lamp 24 that is in contact with the light guiding film 27.
  • an accommodating space 28 is formed on the inner side of the LED lamp 24 under the light guiding film 27, and the accommodating space 28 is used when the backlight module is installed in the liquid crystal display device for making a mobile phone or a tablet computer. It can be designed with the whole structure of a mobile phone or a tablet, such as a circuit, a battery, and the like.
  • only one LED lamp 24 may be disposed in the backlight module, and the LED lamp 24 is located at an edge position below the light guiding film 27 to realize single-side light entering of the backlight module 20.
  • two LED lamps 24 may be disposed in the backlight module, and the two LED lamps 24 are respectively located at edge positions below the two sides of the light guiding film 27 to implement bilateral sides of the backlight module. Light is incident, thereby increasing the display brightness of the liquid crystal display device.
  • the double-sided tape 30 is a black and white double-sided tape.
  • the optical film group 21 includes a diffusion film and upper and lower prism sheets.
  • the thickness of the light guiding film 27 ranges from 0.025 mm to 0.2 mm.
  • the thickness of the optical film group 21 is generally about 0.16 mm.
  • the limit thickness of the backlight module of the present invention is the sum of the thicknesses of the light guiding film 27 and the optical film group 21.
  • the thickness of the optical film group 21 is 0.16 mm.
  • the backlight module of the present invention provides two embodiments, the difference between the two embodiments is that the flexible circuit board 22 is mounted differently from the LED lamp 24.
  • the flexible circuit board 22 is disposed under the LED lamp 24 and is fixedly connected thereto.
  • the plastic frame 23 is disposed on the flexible circuit board 22 .
  • the LED lamp 24 is fixed on the plastic frame 23 by the double-sided tape 30.
  • the mounting manner of the LED lamp 24 and the flexible circuit board 22 is different from the prior art.
  • the light emitting surface 245 of the LED lamp 240 is perpendicular to the LED light.
  • the light-emitting surface 241 of the LED lamp 24 is the side of the LED lamp 24 that is away from the flexible circuit board 22 in the first embodiment of the present application.
  • the flexible circuit board 22 is disposed on the bottom surface of the backlight module.
  • the advantage of the arrangement is that the heat dissipation is convenient, and the backlight module is advantageously applied to the tablet computer.
  • the flexible circuit board 22 is disposed on a side of the LED lamp 24 and is fixedly connected thereto, and the plastic frame 23 is disposed on the flexible circuit.
  • the flexible circuit board 22 is fixed to the plastic frame 23 by the double-sided tape 30 on the outer side of the board 22.
  • the light-emitting surface 241 of the LED lamp 24 is perpendicular to the side of the LED lamp 24 that is in contact with the flexible circuit board 22, that is, the flexible circuit board 22 and the LED.
  • the lamp 24 is mounted in the same manner as the prior art. Compared with the first embodiment, the backlight module of the second embodiment is easier to assemble and saves production costs.
  • the present invention further provides a liquid crystal display device including the backlight module and the liquid crystal panel 10 disposed on the backlight module.
  • the liquid crystal panel 10 includes a TFT substrate 13 , a lower polarizer 14 disposed under the TFT substrate 13 , a CF substrate 12 disposed above the TFT substrate 13 , and an upper polarized light disposed above the CF substrate 12 .
  • the lower polarizer 14 of the liquid crystal panel 10 is bonded to the plastic frame 23 in the backlight module through the double-sided tape 30, thereby fixing the liquid crystal panel 10 and the backlight module together.
  • FIG. 6 and FIG. 7 are respectively schematic structural diagrams of the first and second embodiments of the liquid crystal display device of the present invention, and the liquid crystal display devices shown in FIGS. 6 and 7 are respectively mounted with the first, FIG. 2 and FIG.
  • the backlight module of the second embodiment has no specific details on the specific structure of the backlight module.
  • the liquid crystal display devices of the first and second embodiments are respectively equipped with a backlight module of a special structure, and the structure of the backlight module is replaced by a light guide film instead of the conventional backlight module, and the light guide plate is omitted.
  • the setting of the reflective sheet is removed, thereby reducing the thickness of the backlight module, and an accommodating space is formed between the light guiding film of the backlight module and the LED lamp, when the liquid crystal display device is used for making a mobile phone or a tablet computer.
  • the accommodating space can be designed according to the whole structure of the mobile phone or the tablet computer, and is used for placing components such as circuits and batteries, thereby further reducing the thickness of the liquid crystal display device.
  • the present invention provides a backlight module and a liquid crystal display device in which the backlight module is mounted.
  • the structure of the backlight module is replaced by a light guide film instead of the light guide plate.
  • the arrangement of the reflective sheet is omitted, so that the backlight module has a thin thickness, and an accommodating space is formed between the light guiding film of the backlight module and the LED lamp, so that the liquid crystal display of the backlight module is mounted.
  • the accommodating space can be designed in accordance with the overall structure of the mobile phone or the tablet computer, and is used for accommodating components such as circuits and batteries, thereby making the thickness of the liquid crystal display device thinner.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模组，包括导光膜（27），并省去了反射片的设置，从而使背光模组具有较薄的厚度，并且导光膜（27）与LED灯（24）之间形成一容置空间（28），使得安装背光模组的液晶显示装置用于制作手机或平板电脑时，容置空间（28）可以配合手机或平板电脑的整机结构进行设计，用于安放电路、电池等元件，从而使液晶显示装置的厚度变得更薄。还提供一种液晶显示装置。

Description

背光模组及液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种背光模组及液晶显示装置。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括背光模组(Backlight module)、结合于背光模组上的液晶面板与固定该液晶面板与背光模组的前框。
通常液晶显示面板由彩膜基板(CF，Color Filter)、薄膜晶体管基板(TFT，Thin Film Transistor)、夹于彩膜基板与薄膜晶体管基板之间的液晶(LC，Liquid Crystal)及密封胶框(Sealant)组成，液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
液晶面板本身不发光，需要借由背光模组提供的光源来正常显示影像，背光模组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。侧入式背光模组是将背光源LED灯条(Light bar)设于液晶面板侧后方的背板边缘，LED灯条发出的光线从导光板(LGP，Light Guide Plate)一侧的入光面进入导光板，经反射和扩散后从导光板出光面射出，再经由光学膜片组以形成面光源提供给液晶面板。直下式背光模组是将发光光源例如阴极萤光灯管(Cold Cathode Fluorescent Lamp，CCFL)或发光二极管(Light Emitting Diode，LED)设置在液晶面板后方，直接形成面光源提供给液晶面板。
随着移动通讯产品及平板电脑类产品薄型化的高速发展，用户也越来越追求超薄的体验，目前市面上最薄的手机为大约6.1mm。液晶显示装置的厚度关键在于液晶面板的厚度与背光模组的厚度，目前背光模组的架构是三层膜片(上下棱镜片，扩散片)，而反射片多数运用银反射片，也有低端机种使用白反射片。导光板多数配合LED型号使用，如LED3806配合0.4mm的导光板。这样一来，背光模组的厚度就由这些部材所决定，如图1 所示，为一现有的液晶显示装置的结构示意图，该液晶显示装置包括背光模组200、以及设于所述背光模组200上的液晶面板100，其中，所述液晶面板100包括TFT基板130、设于所述TFT基板130下方的下偏光片140、设于所述TFT基板130上方的CF基板120、设于所述CF基板120上方的上偏光片110、及位于所述CF基板120与TFT基板130之间的液晶层(未示出)；所述背光模组200为侧入式背光模组，包括反射片260，设于所述反射片260上的导光板250、设于所述反射片260上且位于所述导光板250一短侧边的LED灯240、设于所述反射片260上且位于所述LED灯240外侧的胶框230、设于所述导光板250上方的光学膜片组210、及设于所述LED灯240上且与LED灯240电性连接的柔性电路板220；所述背光模组200中，所述LED灯240的出光面245垂直于LED灯240上与柔性电路板220相接触的一面，所述胶框230通过双面胶300粘接于柔性电路板220上，所述导光板250通过双面胶300粘接于柔性电路板220与光学膜片组210上；所述液晶面板100中的下偏光片140通过双面胶300粘接于所述背光模组200中的光学膜片组210，从而将液晶面板100与背光模组200固定在一起。
目前背光行业中用最新技术产出的背光模组最薄也只有0.43mm，这类背光模组不仅价格昂贵，而且组装精度要求高，良率不好控制，并且若要将该0.43mm的背光模组继续做薄下去就会遇到LED灯高度与导光板的楔形口难以匹配的问题。
发明内容
本发明的目的在于提供一种背光模组，采用导光膜替换掉传统的背光模组中使用的导光板，并省去了反射片的设置，从而使所述背光模组的厚度变薄，且该背光模组内部具有一容置空间，可用于配合手机或平板电脑的整机结构进行设计，用于安放电路，电池等原件，有利于整个显示装置的薄型化。
本发明的目的还在于提供一种液晶显示装置，其采用上述具有特殊结构的背光模组，从而具有较薄的厚度，且显示效果良好。
为实现上述目的，本发明提供一种背光模组，包括导光膜、设于所述导光膜上方的光学膜片组、设于所述导光膜下方且位于所述导光膜边缘位置的LED灯、与LED灯电性连接的柔性电路板、及设于所述导光膜、光学膜片组、及LED灯外侧的胶框；
其中，所述LED灯的出光面为所述LED灯上与导光膜相接触的一面。
所述导光膜与LED灯之间形成一容置空间。
所述LED灯的数量为一个，位于导光膜一侧下方的边缘位置，实现所述背光模组的单边入光。
所述LED灯的数量为两个，分别位于导光膜两侧下方的边缘位置，实现所述背光模组的双边入光。
所述柔性电路板设于LED灯的下方并与其固定连接，所述胶框设于柔性电路板上且位于LED灯的外侧，所述LED灯通过双面胶固定于胶框上。
所述柔性电路板设于LED灯的侧边并与其固定连接，所述胶框设于柔性电路板的外侧，所述柔性电路板通过双面胶固定于胶框上。
所述双面胶为黑白双面胶。
所述光学膜片组包括扩散膜、及上下棱镜片。
所述导光膜的厚度范围为0.025mm～0.2mm。
本发明还提供一种背光模组，包括导光膜、设于所述导光膜上方的光学膜片组、设于所述导光膜下方且位于所述导光膜边缘位置的LED灯、与LED灯电性连接的柔性电路板、及设于所述导光膜、光学膜片组、及LED灯外侧的胶框；
其中，所述LED灯的出光面为所述LED灯上与导光膜相接触的一面；
其中，所述导光膜与LED灯之间形成一容置空间；
其中，所述双面胶为黑白双面胶；
其中，所述光学膜片组包括扩散膜、及上下棱镜片。
本发明还提供一种液晶显示装置，包括上述背光模组、以及设于所述背光模组上的液晶面板；
其中，所述液晶面板包括TFT基板、设于所述TFT基板下方的下偏光片、设于所述TFT基板上方的CF基板、设于所述CF基板上方的上偏光片、及位于所述CF基板与TFT基板之间的液晶层；
所述液晶面板中的下偏光片通过双面胶粘接于所述背光模组中的胶框，从而将液晶面板与背光模组固定在一起。
本发明的有益效果：本发明提供的一种背光模组及安装该背光模组的液晶显示装置，所述背光模组的结构与传统的背光模组相比，采用导光膜代替了导光板，并省去了反射片的设置，从而使该背光模组具有较薄的厚度，并且所述背光模组的导光膜与LED灯之间形成一容置空间，使得安装该背光模组的液晶显示装置用于制作手机或平板电脑时，该容置空间可以配合手机或平板电脑的整机结构进行设计，用于安放电路、电池等元件，从而使该液晶显示装置的厚度变得更薄。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为一种现有的液晶显示装置的结构示意图；
图2为本发明的背光模组第一实施例的结构示意图；
图3为图2所示的背光模组中的LED灯与柔性电路板的放大示意图；
图4为本发明的背光模组第二实施例的结构示意图；
图5为图4所示的背光模组中的LED灯与柔性电路板的放大示意图；
图6为本发明的液晶显示装置的第一实施例的结构示意图；
图7为本发明的液晶显示装置的第二实施例的结构示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2、及图4，本发明首先提供一种背光模组，包括导光膜27、设于所述导光膜27上方的光学膜片组21、设于所述导光膜27下方且位于所述导光膜27边缘位置的LED灯24、与LED灯24电性连接的柔性电路板22、及设于所述导光膜27、光学膜片组21、及LED灯24外侧的胶框23。
具体的，所述LED灯24的出光面241为所述LED灯24上与导光膜27相接触的一面。
具体的，所述导光膜27下方于所述LED灯24的内侧形成一容置空间28，当该背光模组安装于液晶显示装置中用于制作手机或平板电脑时，该容置空间28可以配合手机或平板电脑的整机结构进行设计，比如安放电路、电池等元件。
具体的，所述背光模组中可以仅设置一个LED灯24，所述LED灯24位于导光膜27一侧下方的边缘位置，实现所述背光模组20的单边入光。
可选的，所述背光模组中也可以设置两个LED灯24，所述两个LED灯24分别位于导光膜27两侧下方的边缘位置，实现所述背光模组的双边 入光，从而提高液晶显示装置的显示亮度。
具体的，所述双面胶30为黑白双面胶。
具体的，所述光学膜片组21包括扩散膜、及上下棱镜片。
具体的，所述导光膜27的厚度范围为0.025mm～0.2mm。
具体的，所述光学膜片组21的厚度一般为0.16mm左右。
本发明的背光模组的极限厚度为导光膜27与光学膜片组21的厚度之和，当所述导光膜27的厚度为0.2mm，所述光学膜片组21的厚度为0.16mm时，所述背光模组的厚度为0.2mm+0.16mm＝0.36mm，比目前最薄的0.43mm的背光模组还要薄，并且当所述导光膜27的厚度降低时，所述背光模组的厚度会更薄。
进一步的，本发明的背光模组提供有两个实施例，该两个实施例的差别在于：柔性电路板22与LED灯24的安装方式不同。
请参阅图2-3，为本发明的背光模组的第一实施例，所述柔性电路板22设于LED灯24的下方并与其固定连接，所述胶框23设于柔性电路板22上且位于LED灯24的外侧，所述LED灯24通过双面胶30固定于胶框23上。
该第一实施例中，所述LED灯24与柔性电路板22的安装方式与现有技术不同，现有技术中，如图1所示，所述LED灯240的出光面245垂直于LED灯240上与柔性电路板220相接触的一面，而本申请第一实施例中，所述LED灯24的出光面241为所述LED灯24上远离所述柔性电路板22的一面。
该第一实施例中，所述柔性电路板22设置于背光模组的底面，这样设置的好处是方便散热，有利于将该背光模组应用于平板电脑中。
请参阅图4-5，为本发明的背光模组的第二实施例，所述柔性电路板22设于LED灯24的侧边并与其固定连接，所述胶框23设于所述柔性电路板22的外侧，所述柔性电路板22通过双面胶30固定于胶框23上。
该第二实施例的背光模组中，所述LED灯24的出光面241垂直于所述LED灯24上与所述柔性电路板22相接触的一面，也即所述柔性电路板22与LED灯24的安装方式与现有技术相同，与第一实施例相比，该第二实施例的背光模组更易于组装，并节约生产成本。
基于上述背光模组，本发明还提供一种液晶显示装置，包括上述背光模组、以及设于所述背光模组上的液晶面板10。其中，所述液晶面板10包括TFT基板13、设于所述TFT基板13下方的下偏光片14、设于所述TFT基板13上方的CF基板12、设于所述CF基板12上方的上偏光片11、及 位于所述CF基板12与TFT基板13之间的液晶层(未示出)。
具体的，所述液晶面板10中的的下偏光片14通过双面胶30粘接于所述背光模组中的胶框23，从而将液晶面板10与背光模组固定在一起。
图6、图7分别为本发明的液晶显示装置的第一、第二实施例的结构示意图，图6、图7所示的液晶显示装置分别安装有图2、图4所示的第一、第二实施例的背光模组，关于背光模组的具体结构，此处不再赘述。
上述第一与第二实施例的液晶显示装置，均安装有特殊结构的背光模组，所述背光模组的结构与传统的背光模组相比，采用导光膜代替了导光板，并省去了反射片的设置，从而降低了背光模组的厚度，并且所述背光模组的导光膜与LED灯之间形成一容置空间，当该液晶显示装置用于制作手机或平板电脑时，该容置空间可以配合手机或平板电脑的整机结构进行设计，用于安放电路、电池等元件，从而进一步降低液晶显示装置的厚度。
综上所述，本发明提供一种背光模组及安装该背光模组的液晶显示装置，所述背光模组的结构与传统的背光模组相比，采用导光膜代替了导光板，并省去了反射片的设置，从而使该背光模组具有较薄的厚度，并且所述背光模组的导光膜与LED灯之间形成一容置空间，使得安装该背光模组的液晶显示装置用于制作手机或平板电脑时，该容置空间可以配合手机或平板电脑的整机结构进行设计，用于安放电路、电池等元件，从而使该液晶显示装置的厚度变得更薄。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (16)

  1. 一种背光模组，包括导光膜、设于所述导光膜上方的光学膜片组、设于所述导光膜下方且位于所述导光膜边缘位置的LED灯、与LED灯电性连接的柔性电路板、及设于所述导光膜、光学膜片组、及LED灯外侧的胶框；
    其中，所述LED灯的出光面为所述LED灯上与导光膜相接触的一面。
  2. 如权利要求1所述的背光模组，其中，所述导光膜与LED灯之间形成一容置空间。
  3. 如权利要求1所述的背光模组，其中，所述LED灯的数量为一个，位于导光膜一侧下方的边缘位置，实现所述背光模组的单边入光。
  4. 如权利要求1所述的背光模组，其中，所述LED灯的数量为两个，分别位于导光膜两侧下方的边缘位置，实现所述背光模组的双边入光。
  5. 如权利要求1所述的背光模组，其中，所述柔性电路板设于LED灯的下方并与其固定连接，所述胶框设于柔性电路板上且位于LED灯的外侧，所述LED灯通过双面胶固定于胶框上。
  6. 如权利要求1所述的背光模组，其中，所述柔性电路板设于LED灯的侧边并与其固定连接，所述胶框设于柔性电路板的外侧，所述柔性电路板通过双面胶固定于胶框上。
  7. 如权利要求1所述的背光模组，其中，所述双面胶为黑白双面胶。
  8. 如权利要求1所述的背光模组，其中，所述光学膜片组包括扩散膜、及上下棱镜片。
  9. 如权利要求1所述的背光模组，其中，所述导光膜的厚度范围为0.025mm～0.2mm。
  10. 一种背光模组，包括导光膜、设于所述导光膜上方的光学膜片组、设于所述导光膜下方且位于所述导光膜边缘位置的LED灯、与LED灯电性连接的柔性电路板、及设于所述导光膜、光学膜片组、及LED灯外侧的胶框；
    其中，所述LED灯的出光面为所述LED灯上与导光膜相接触的一面；
    其中，所述导光膜与LED灯之间形成一容置空间；
    其中，所述双面胶为黑白双面胶；
    其中，所述光学膜片组包括扩散膜、及上下棱镜片。
  11. 如权利要求10所述的背光模组，其中，所述LED灯的数量为一 个，位于导光膜一侧下方的边缘位置，实现所述背光模组的单边入光。
  12. 如权利要求10所述的背光模组，其中，所述LED灯的数量为两个，分别位于导光膜两侧下方的边缘位置，实现所述背光模组的双边入光。
  13. 如权利要求10所述的背光模组，其中，所述柔性电路板设于LED灯的下方并与其固定连接，所述胶框设于柔性电路板上且位于LED灯的外侧，所述LED灯通过双面胶固定于胶框上。
  14. 如权利要求10所述的背光模组，其中，所述柔性电路板设于LED灯的侧边并与其固定连接，所述胶框设于柔性电路板的外侧，所述柔性电路板通过双面胶固定于胶框上。
  15. 如权利要求10所述的背光模组，其中，所述导光膜的厚度范围为0.025mm～0.2mm。
  16. 一种液晶显示装置，包括如权利要求1所述的背光模组、以及设于所述背光模组上的液晶面板；
    其中，所述液晶面板包括TFT基板、设于所述TFT基板下方的下偏光片、设于所述TFT基板上方的CF基板、设于所述CF基板上方的上偏光片、及位于所述CF基板与TFT基板之间的液晶层；
    所述液晶面板中的下偏光片通过双面胶粘接于所述背光模组中的胶框，从而将液晶面板与背光模组固定在一起。
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